/* Letra de Ley — web pública. Tokens y reglas en DESIGN.md */
:root {
  --bg: #f7f6f2; --surface: #ffffff; --surface-2: #efede6; --ink: #1b2440; --text: #23272f; --muted: #5b6170;
  --line: #dcd8cf; --primary: #1d3a7a; --primary-hover: #152c5f; --primary-ink: #ffffff; --accent: #b4540c;
  --ok: #17803d; --ok-bg: #e7f5ec; --ok-text: #146c34;
  --marca-bg: #1b2440; --marca-text: #f7f6f2; --marca-muted: #c9cedb; --marca-accent: #f0a04b;
  --serif: "Iowan Old Style", "Palatino Linotype", Palatino, "Book Antiqua", Georgia, "Noto Serif", "Times New Roman", serif;
  --sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --radius: 16px; --radius-btn: 12px;
  --shadow: 0 1px 2px rgba(20,24,40,.06), 0 10px 30px rgba(20,24,40,.08);
  --ease: cubic-bezier(.22, 1, .36, 1); --t: 180ms;
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #0e1320; --surface: #161d2e; --surface-2: #1b2335; --ink: #e8ecf6; --text: #e2e4ea; --muted: #a3a9b8;
    --line: #2b3550; --primary: #8fb0ff; --primary-hover: #adc5ff; --primary-ink: #0e1320; --accent: #f0a04b;
    --ok: #4ade80; --ok-bg: #12301f; --ok-text: #4ade80;
    --marca-bg: #1b2440; --marca-text: #e8ecf6; --marca-muted: #b8bfd0;
    --shadow: 0 1px 2px rgba(0,0,0,.3), 0 10px 30px rgba(0,0,0,.3); color-scheme: dark;
  }
}
:root[data-theme="dark"] {
  --bg: #0e1320; --surface: #161d2e; --surface-2: #1b2335; --ink: #e8ecf6; --text: #e2e4ea; --muted: #a3a9b8;
  --line: #2b3550; --primary: #8fb0ff; --primary-hover: #adc5ff; --primary-ink: #0e1320; --accent: #f0a04b;
  --ok: #4ade80; --ok-bg: #12301f; --ok-text: #4ade80;
  --marca-bg: #1b2440; --marca-text: #e8ecf6; --marca-muted: #b8bfd0;
  --shadow: 0 1px 2px rgba(0,0,0,.3), 0 10px 30px rgba(0,0,0,.3); color-scheme: dark;
}

/* Base */
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
@media (prefers-reduced-motion: no-preference) { html { scroll-behavior: smooth; } }
body { margin: 0; background: var(--bg); color: var(--text); font: 17px/1.6 var(--sans); -webkit-font-smoothing: antialiased; overflow-x: hidden; }
h1, h2, h3 { text-wrap: balance; }
p, li { text-wrap: pretty; }
a { color: var(--primary); text-underline-offset: .18em; text-decoration-thickness: .07em; transition: color var(--t) var(--ease), text-decoration-color var(--t) var(--ease); }
a:hover { text-decoration-thickness: .12em; }
img { max-width: 100%; height: auto; display: block; }
:focus-visible { outline: 3px solid var(--primary); outline-offset: 3px; border-radius: 4px; }
::selection { background: color-mix(in srgb, var(--accent) 28%, transparent); }
.env { width: 100%; max-width: 1080px; margin: 0 auto; padding: 0 16px; }
.estrecho { max-width: 760px; }
.centro { text-align: center; justify-content: center; }
.saltar { position: absolute; left: -9999px; }
.saltar:focus { left: 16px; top: 10px; display: inline-flex; align-items: center; min-height: 44px; background: var(--surface); color: var(--ink); padding: 0 16px; box-shadow: var(--shadow); border-radius: 8px; z-index: 10; }

/* Iconos: marca de verificación en SVG en línea (máscara), sin emojis */
.check { list-style: none; padding: 0; }
.check li { position: relative; padding-left: 28px; }
.check li::before { content: ""; position: absolute; left: 0; top: .2em; width: 20px; height: 20px; background: var(--ok);
  -webkit-mask: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 20 20'%3E%3Cpath d='M4 10.5l4 4 8-9' fill='none' stroke='%23000' stroke-width='2.4' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E") center / 20px no-repeat;
          mask: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 20 20'%3E%3Cpath d='M4 10.5l4 4 8-9' fill='none' stroke='%23000' stroke-width='2.4' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E") center / 20px no-repeat; }

/* Cabecera */
.cab { position: sticky; top: 0; z-index: 5; background: color-mix(in srgb, var(--bg) 90%, transparent); backdrop-filter: blur(8px); -webkit-backdrop-filter: blur(8px); border-bottom: 1px solid var(--line); }
.cab .env { display: flex; align-items: center; justify-content: space-between; gap: 8px; min-height: 64px; }
.marca { display: inline-flex; align-items: center; gap: 10px; min-height: 44px; text-decoration: none; color: var(--ink); font: 700 20px/1 var(--serif); white-space: nowrap; }
.logo { flex: none; width: 34px; height: 34px; border-radius: 10px; background: var(--ink); color: var(--bg); display: inline-grid; place-items: center; font: 700 21px/1 var(--serif); }
.cab nav { display: flex; gap: 2px; }
.cab nav a { display: inline-flex; align-items: center; min-height: 44px; padding: 0 12px; border-radius: 10px; text-decoration: none; color: var(--text); font-weight: 600; font-size: 15px; white-space: nowrap;
  transition: background-color var(--t) var(--ease), color var(--t) var(--ease); }
.cab nav a:hover { background: var(--surface-2); color: var(--ink); }
.cab nav a.nav-accion { color: var(--primary); }

/* Botones */
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; min-height: 48px; padding: 12px 22px; border-radius: var(--radius-btn);
  background: var(--primary); color: var(--primary-ink); font-weight: 700; font-size: 17px; line-height: 1.25; text-decoration: none; border: 0; text-align: center;
  transition: background-color var(--t) var(--ease), box-shadow var(--t) var(--ease), transform 150ms var(--ease); }
.btn:hover { background: var(--primary-hover); text-decoration: none; }
.btn:active { transform: scale(.98); }
.btn.sec { background: var(--surface); color: var(--ink); box-shadow: inset 0 0 0 1.5px var(--line); }
.btn.sec:hover { box-shadow: inset 0 0 0 1.5px var(--ink); }
.btn.off, .btn.off:hover { background: var(--surface-2); color: var(--muted); box-shadow: none; cursor: default; transform: none; }
.botones { display: flex; flex-wrap: wrap; align-items: center; gap: 12px; margin: 28px 0 0; }
.heroe-botones { column-gap: 24px; row-gap: 6px; }
.enlace-sec { display: inline-flex; align-items: center; min-height: 44px; font-weight: 700; color: var(--primary); }

/* Héroe */
.heroe { padding: 64px 0 80px; }
.heroe-rejilla { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); column-gap: 56px; align-items: center; }
.sellos { margin: 32px 0 0; display: grid; grid-template-columns: repeat(2, minmax(0, max-content)); gap: 10px 28px; color: var(--muted); font-size: 15px; }
.antetitulo { color: var(--accent); font-weight: 700; font-size: 14px; letter-spacing: .04em; text-transform: uppercase; margin: 0 0 14px; }
h1 { font: 700 clamp(34px, 5.2vw, 54px)/1.08 var(--serif); color: var(--ink); margin: 0 0 20px; letter-spacing: -.02em; }
.subrayado { background: linear-gradient(transparent 60%, color-mix(in srgb, var(--accent) 34%, transparent) 60%); -webkit-box-decoration-break: clone; box-decoration-break: clone; }
.entradilla { font-size: 19px; line-height: 1.55; color: var(--muted); margin: 0; max-width: 34em; }

/* Pregunta de muestra: la prueba del producto */
.muestra { margin: 0; }
.hoja { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); box-shadow: var(--shadow); padding: 22px; }
.m-meta { display: flex; justify-content: space-between; align-items: center; gap: 12px; margin: 0 0 12px; font-size: 14px; color: var(--muted); font-weight: 600; }
.m-art { color: var(--accent); font-weight: 700; }
.m-enunciado { margin: 0 0 14px; font-weight: 700; color: var(--ink); font-size: 17px; line-height: 1.45; }
.m-opciones { list-style: none; padding: 0; margin: 0; display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 8px; font-size: 16px; }
.m-opciones li { display: flex; align-items: center; gap: 12px; min-height: 48px; border: 1.5px solid var(--line); border-radius: 12px; padding: 6px 12px 6px 8px; }
.m-letra { flex: none; display: inline-grid; place-items: center; width: 32px; height: 32px; border-radius: 8px; background: var(--surface-2); color: var(--ink); font-weight: 700; font-size: 15px; }
.m-opciones li.ok { border-color: var(--ok); background: var(--ok-bg); }
.m-opciones li.ok .m-letra { background: var(--ok); color: var(--surface); }
.m-correcta { margin-left: auto; color: var(--ok-text); font-size: 14px; font-weight: 700; }
.m-explica { margin-top: 14px; font-size: 15px; line-height: 1.55; background: var(--surface-2); border-radius: 12px; padding: 14px 16px; }
.m-explica > p { margin: 0; }
blockquote { margin: 12px 0 0; padding: 10px 14px; border-left: 3px solid var(--accent); font: italic 15px/1.55 var(--serif); background: var(--surface); border-radius: 0 8px 8px 0; color: var(--text); }
blockquote p { margin: 0; }
blockquote footer { margin-top: 6px; font: 700 13px/1.4 var(--sans); font-style: normal; color: var(--muted); }
.muestra figcaption, .captura figcaption { margin: 14px 4px 0; font-size: 14px; line-height: 1.5; color: var(--muted); }

/* Bloque oscuro de marca */
.franja { background: var(--marca-bg); color: var(--marca-text); padding: 56px 0; }
.franja h2 { font: 700 22px/1.25 var(--serif); margin: 0 0 8px; color: var(--marca-text); }
.franja h2::before { content: "§"; content: "§" / ""; display: block; margin-bottom: 10px; color: var(--marca-accent); font: 700 24px/1 var(--serif); }
.franja p { margin: 0; color: var(--marca-muted); }
.tres { display: grid; grid-template-columns: repeat(3, 1fr); gap: 40px; }

/* Secciones */
.seccion { padding: 96px 0; }
.suave { background: var(--surface-2); }
.titulo-seccion { font: 700 clamp(30px, 3.8vw, 40px)/1.12 var(--serif); color: var(--ink); margin: 0 0 12px; letter-spacing: -.01em; }
.seccion h3 { font-size: 19px; line-height: 1.3; color: var(--ink); margin: 0 0 6px; }
.nota { color: var(--muted); font-size: 15px; margin: 24px 0 0; }

/* Qué te llevas */
.incluye { display: grid; grid-template-columns: minmax(0, 300px) minmax(0, 1fr); column-gap: 72px; align-items: center; }
.captura { order: -1; margin: 0; }
.captura picture { display: block; border-radius: 24px; overflow: hidden; border: 6px solid var(--marca-bg); background: var(--surface); box-shadow: var(--shadow); }
.entrega { padding: 22px 0 0; margin-top: 22px; border-top: 1px solid var(--line); }
.entrega:first-child { border-top: 0; margin-top: 12px; }
.entrega p { margin: 0; }
.entrega .check { margin: 12px 0 0; display: grid; gap: 8px; }

/* Packs */
.packs { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 20px; margin-top: 32px; }
.pack { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); box-shadow: var(--shadow); padding: 24px; display: flex; flex-direction: column; }
.pack h3 { font: 700 24px/1.2 var(--serif); margin: 0 0 6px; color: var(--ink); }
.pack .ed { color: var(--accent); font-size: 14px; font-weight: 700; margin: 0; }
.pack .cifra { color: var(--muted); font-size: 15px; margin: 2px 0 14px; }
.pack p { margin: 0 0 14px; }
.pack .incluye-pack { margin: 0 0 16px; display: grid; gap: 6px; font-size: 16px; }
.leyes { list-style: none; padding: 0; margin: -4px 0 16px; display: flex; flex-wrap: wrap; gap: 6px; }
.leyes li { font-size: 14px; font-weight: 600; color: var(--ink); background: var(--surface-2); border-radius: 8px; padding: 3px 9px; }
.pack .fila { margin-top: auto; padding-top: 18px; border-top: 1px solid var(--line); display: flex; align-items: center; justify-content: space-between; gap: 12px; flex-wrap: wrap; }
.importe { display: flex; align-items: baseline; gap: 10px; margin: 0; }
.precio { font: 800 32px/1 var(--sans); color: var(--ink); font-variant-numeric: tabular-nums; letter-spacing: -.01em; }
.luego { color: var(--muted); font-size: 15px; }
.pack .btn { min-width: 150px; }
.garantias { margin: 28px 0 0; display: flex; flex-wrap: wrap; gap: 10px 32px; font-size: 16px; color: var(--text); }
.garantias b { color: var(--ink); }

/* Secciones de dos columnas: título a la izquierda, contenido a la derecha */
.dos-col { display: grid; grid-template-columns: minmax(0, 5fr) minmax(0, 7fr); column-gap: 56px; align-items: start; }
.dudas-cab .nota { margin-top: 12px; }

/* Tests gratis por ley */
.lista-tests { list-style: none; padding: 0; margin: 8px 0 0; display: grid; gap: 12px; }
.lista-tests a { display: flex; align-items: center; gap: 16px; min-height: 64px; padding: 16px 18px; background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); text-decoration: none; color: var(--ink);
  transition: border-color var(--t) var(--ease), background-color var(--t) var(--ease); }
.lista-tests a:hover { border-color: var(--primary); }
.lt-texto { display: grid; gap: 2px; }
.lt-nombre { font-weight: 700; line-height: 1.35; }
.lt-n { color: var(--muted); font-size: 14px; }
.lt-flecha { flex: none; margin-left: auto; width: 22px; height: 22px; color: var(--primary); transition: transform var(--t) var(--ease); }
.lista-tests a:hover .lt-flecha { transform: translateX(3px); }

/* Dudas */
.dudas details { background: var(--surface); border: 1px solid var(--line); border-radius: 12px; margin: 0 0 10px; transition: border-color var(--t) var(--ease); }
.dudas details[open] { border-color: color-mix(in srgb, var(--ink) 30%, var(--line)); }
.dudas summary { list-style: none; display: flex; align-items: center; justify-content: space-between; gap: 16px; min-height: 56px; padding: 12px 16px; cursor: pointer; font-weight: 700; color: var(--ink); border-radius: 12px;
  transition: background-color var(--t) var(--ease); }
.dudas summary::-webkit-details-marker { display: none; }
.dudas summary:hover { background: var(--surface-2); }
.dudas summary::after { content: ""; flex: none; width: 20px; height: 20px; background: var(--muted); transition: transform 200ms var(--ease);
  -webkit-mask: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 20 20'%3E%3Cpath d='M5 7.5l5 5 5-5' fill='none' stroke='%23000' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E") center / 20px no-repeat;
          mask: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 20 20'%3E%3Cpath d='M5 7.5l5 5 5-5' fill='none' stroke='%23000' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E") center / 20px no-repeat; }
.dudas details[open] summary::after { transform: rotate(180deg); }
.dudas details p { margin: 0; padding: 0 16px 16px; color: var(--text); }
.dudas details[open] > p { animation: abrir 220ms var(--ease); }
@keyframes abrir { from { opacity: 0; transform: translateY(-4px); } }

/* 404 */
.error h1 { margin-bottom: 12px; }
.sello-error { margin: 0 auto 20px; width: 64px; height: 64px; border-radius: 16px; background: var(--ink); color: var(--bg); display: grid; place-items: center; font: 700 38px/1 var(--serif); }

/* Legal */
.legal-texto h1 { font-size: clamp(32px, 4.2vw, 42px); }
.legal-texto h2 { font: 700 21px/1.3 var(--serif); color: var(--ink); margin: 36px 0 8px; }
.legal-texto ul { padding-left: 1.2em; }
.legal-texto li { margin: 4px 0; }
.peq { font-size: 14px; color: var(--muted); }

/* Pie */
.pie { background: var(--surface-2); padding: 48px 0 40px; color: var(--muted); font-size: 14px; }
.pie-rejilla { display: grid; grid-template-columns: minmax(0, 1fr) auto; grid-template-areas: "marca legal" "letra letra"; gap: 20px 32px; align-items: start; }
.pie-marca { grid-area: marca; }
.pie-marca .marca { font-size: 22px; }
.pie-lema { margin: 8px 0 0; color: var(--text); font-size: 16px; }
.legal { grid-area: legal; display: flex; flex-wrap: wrap; gap: 0 4px; margin: 0 -10px; }
.legal a { display: inline-flex; align-items: center; min-height: 44px; padding: 0 10px; color: var(--text); font-size: 15px; text-decoration: none; border-radius: 8px; transition: background-color var(--t) var(--ease); }
.legal a:hover { background: color-mix(in srgb, var(--ink) 7%, transparent); text-decoration: underline; }
.pie-letra { grid-area: letra; padding-top: 20px; border-top: 1px solid var(--line); }
.pie-letra p { margin: 0 0 6px; max-width: 72ch; }

/* Tableta */
@media (max-width: 900px) {
  .heroe { padding: 32px 0 56px; }
  .heroe-rejilla { display: flex; flex-direction: column; align-items: stretch; }
  .heroe-texto { display: contents; }
  .muestra { order: 1; margin-top: 32px; }
  .sellos { order: 2; }
  .dos-col { grid-template-columns: minmax(0, 1fr); }
  .lista-tests { margin-top: 24px; }
  .dudas-lista { margin-top: 20px; }
  .tres { grid-template-columns: 1fr; gap: 32px; }
  .seccion { padding: 64px 0; }
  .incluye { display: flex; flex-direction: column; align-items: stretch; }
  .incluye-texto { display: contents; }
  .captura { order: 1; margin: 28px auto 8px; width: min(100%, 300px); }
  .incluye-lista { order: 2; }
  .pie-rejilla { grid-template-columns: minmax(0, 1fr); grid-template-areas: "marca" "legal" "letra"; gap: 12px; }
}
/* Móvil */
@media (max-width: 480px) {
  .heroe { padding-top: 24px; }
  h1 { margin-bottom: 14px; }
  .entradilla { font-size: 18px; }
  .botones { margin-top: 24px; }
  .btn { width: 100%; }
  .heroe-botones { justify-content: center; }
  .sellos { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 10px 16px; margin-top: 28px; }
  .hoja { padding: 16px; }
  .m-opciones { grid-template-columns: minmax(0, 1fr); }
  .m-explica { padding: 12px 14px; }
  .franja { padding: 48px 0; }
  .pack { padding: 20px; }
  .pack .btn { width: 100%; }
  .garantias { flex-direction: column; }
  .cab nav a { padding: 0 7px; font-size: 14px; }
  .marca { font-size: 18px; gap: 8px; }
  .cab .logo { width: 32px; height: 32px; font-size: 20px; }
}
@media (max-width: 370px) {
  .cab nav a { padding: 0 5px; }
  .cab .marca { font-size: 17px; }
  .cab .logo { width: 30px; height: 30px; }
}

/* Movimiento reducido: sin transiciones ni animaciones */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { transition: none !important; animation: none !important; }
}